Can-heading machine.



F. BRUCKMANN, JR. & 0. DEMPEWOLF.

CAN HEADING MACHINE.

APPLICATION man rss. 10. 1912.

LMGAMQ Patented July 13; 1915.

7 SHEETSSHEET l.

44m VWML What ATTORNEYS F. BRUCKMANN, JR. & 0. DEMPEWOLF.

CAN HEADING MACHINE.

AEPLICATION FILED FEB. 10, l9l2.

Patented July 13, 1915.

7 SHEETS-SHEET 2.

wm mm kw \\W mm @MIH av wT 9Q Wham INVENTORS 141; ATTORNEYS F.BRUCKMANN, 1R. & 0. DEMPEWOLF. CAN HEADING MACHINE.

APPLICATION FILED FEB. 10, 1912- 1,146,4'74, Patented July 13, 1915.

Z SHEETSSHEET 3- WITNESSESS FQ BRUCKMANN, JR. 6; 0. DEMPEWOLF.

CAN HEADING MACHINE. APPLICATION FILED FEB. 10, 1912.

Patenwd July 13 1915 7 SHEETS$HEEI 5.

I N v E NT 0 R s mew/z Bm cKMW wv R M @770 DE/ fPEM/OLF 724; A T'T'O RNE E F. BRUCKMANN, JR. (Q 0. DEMPEWOLF.

CAN HEADING MACHINE.

APPUCATION FILED FEB. 10, 1912.

Pawnted July 13, 1915.

7 SHEETSSHEET 6 Mg/WM ATTORNEYS.

F. BRUCKMANN, JR. & O. DEMPEWOLF. CAN HEADING MACHINE.

APPLICATION FILED FEB. 10. 1912.

31 mfiyima Patented July 13 191.5.

7 SHEETS-SHEET 7.

ATTORNEYS.

FRANZ BRUCKMANN, JILL, Am OTTO DEMPEWOLF, or sRUNswIcK, GERMANY.

CAN-HEADING MACHINE.

Specificationof Letters Patent.

Patented Jul is, rare.

Application filed February 10,1912. Serial No. 676,81 7

To all :whom-it may concern Be 1t known that We, FRANZ BRUCKMANN,

.Jr., and O'r'ro DEMrnwoLr, subjects of the German Empire, and residentsof Brunswick, Germany, have mvented certain new and useful Improvementsin Can-Heading Machines,-of which the followingis a specification. i

The nventlon relates to a machine for applying the heads to sheet metalcan ,bodies and for seaming them into place, particu; larly to seamingthem in such a way'that the use of solder will not berequired Thepresent improvements relate in a general Way to the principle ofoperation involving a tool wheel which has a number of tool surfacessuccessively acting on the Work, such as set forth in the prior patentto Bruckmann and De1npeWolf,No. 895067,

dated August 4th, 1908, although this application involves otherfeatures of importance not necessarily related to the saidprincipleofthe tool wheel.

The machine possesses many advantageous features which will be set forthat length in the following description, wherein we shall outline in fullthat form of embodiment of the invention which we have selected forillustration in the drawings accompanying and forming part ofthe'present specification.

The novelty of the invention .will be in cluded in the claims succeedingsaid description. I

It is to be understood that we donot restrict ourselves to the showingmade by such drawings and description as we may adopt many variationswithin the scope of the invention as expressed in said claims.

Reference is now had to the accompanying drawings which represent as anexample only the preferred manner of practically embodying theinvention.

In said drawingsl*iigure 1 is a plan view of the machine with parts insection showing the position and arrangement of the various parts; Fig.2 is an enlarged section of one of the seaming'heads at rest; Fig. 3 isa similar view of one of the seaming heads in operation; Fig. l is adetail section of the body and head before the seaming operation; Fig. 5is a similar view showing the first step in the operation of seaming and'a section of a fragment ofthe' tool for performing it on the line 5 5of Fig. 8; Fig. 6 is a similar View showing the second step in theseaming operation and fragments of the tools for performing it taken onthe line 6-6 of Fig. 8; Fig. 7 is a similar view of the third step inthe seaming operation'and a section offa fragment of the tool forperformmg 1t on the line 77 of Fig. 8; Fig. 8 1s a diagrammatic sideview of the seaming Wheel; Fig. 9 is a detail of the bending finger onthe seaming wheel. the wheel being shown in section and the finger. ininopera- .tive position. Fig. 10 is a similar section showing thebending finger in operation on the flange ofthe cover; Fig. 11 is anenlarged detail of the backing or anvil wheel, also showing part of theseaming wheel in section on the line 6-6 of Fig. 8; Fig. 12 is anenlarged section of the can body and can head chutes showing theirrelation to the seaming heads;'Fig. 13 is a detail section showingthepreferred manner of engaging the. bodies and heads with each other; Fig.latis. an enlarged detail also showing the engagement of'these part-s:Fig. 15 is a plan View of the seaming heads and the means for feedingcan bodies and covers thereto; Fig. 16 is a section taken-on line 1616,.Fig. 15 showing the can body and cover feeding apparatus and the canbody and cover chutes. Fig. 17 is a sectional 'elevation'onthe line 1717of Fig. 15;

18 is a sectional elevation on the line 18-18 of Fig. la; and Fig. 19 1sa fragmentary detail in plan, showing the can body and '-l1ead feedtiming means. Fig. 20 is a vertical section through part of the machinetaken through the can bodies in Fig. 1.

The apparatus is provided with a suitable frame, the details of whichare not important, provided the frame is so shaped and disposed that itwill properly carry the various moving elements of the machine. Ac-

cording ,to the example here given. the frame has two main or sideportions .25 carrying the principal moving elements of the mechanism.among which are the main shaft 26 extending completely across the frameand the various shorter shafts, to be hereinafter particularlydescribed. by which the seaming heads and blocks are carried. The mainshaft 26 is preferably horizontally disposed so that the. rotatingelements lie .in vertical planes. This allows the ,can parts to be fedby graa-ity and avoids the provision of mechanical devices for feedingthem.

The shaft 26'carries the seaming wheel 27 which isl'secilrod to theshaft and awheel or disk 28 with a cam track 29 thereon. Said shaft alsocarries a spur gear 30 which is fastened to the shaft and meshes withpinion gears 31, which are attached to the arbors 32 of the seamingheads. The gears 31 are of smaller diameter than gear 30 so that theseaming heads make several revolutions for one revolution of the seamingwheel. The seaming wheel 27 is provided on its periphery with toolsurfaces by which the seams ing is effected in the manner broadly setforth in the prior patent to Bruckmann and Dempewolf as herei iibeforereferred to. An important advantage of this seaming wheel is thatanumber of seaming stations may be located around its periphery. Thisallows a number of separate seaming operations to be carried onsimultaneously and accordingly increases the capacity of the machine. InFig. 1, two seaming stations are illustrated, but they may bein anynumber from one to any reasonable number within the limit of the size ofthe seaming wheel without departing from the principle of our invention.At each seaming station there is provided a seaming head and a holdingchuck with their appurtenances of which gears 31 and arbois 32 areparts. The main shaft 26 also carries, at the end opposite the spur gear30, a spur gear 33, which meshes with similar gears 34, one for eachseaming station. Accordingly, Fig. 1 illustrates two gears 34. Thesegears are provided with cam tracks 35, on which run rollers 36 carriedby the plunger shafts 37 of the seaming blocks. Said plunger shafts aremounted to slide in one side member of the frame and held against thecam tracks by springs 38. Gears 33 and 34 are of the same size so thatthe seaming block completes one cycle of movement for every revolutionof the seaming wheel.

The seaming heads 39 are round or otherwise shaped to correspond withthe crosssectional form of the can and are mounted fast upon and rotatewith the arbors 32. Said seaming head-s carry ejector bands 40 which areloose thereon and within which the seamer heads revolve. The ejectorbands are articulated by links 41 to levers 42, which levers arefulcrumed on the frame at 43 and held by springs 44 in contact with thecam 45. Rollers 46 are provided at this point to reduce friction. Thecam 45 is annular and is fastened to turn with the seaming wheel 27 Inoperation the ejector band 40 is periodically moved forward and backwardto allow engagement ofthe can'parts with the seamer head and to ejectthe seamed can from such head, all of which will fully appearhereinafter. Coacting with each seamer head and arranged opposite thesame in axial line therewith are the holding chucks 47. These arefastened on spindles 48 which as shown best in Figs. 2 and 3 turnloosely in the spindles 37 and have thrust bearing against slides 49mounted in the hollow spindles 37 and pressed forward by spri'ngs'50.The face ofthe holding chuck is slightly conical so as to insure itsproper entry into the can body and the holding chuck is surrounded by acup 51 fitting loosely thereon and normally held in the advancedposition shown "in-Fig. 2 by springs 52 and 53, but said cup engagedwith the holding chuck, while the seaming operation is in progress.

In Figs. 2 and 3 the can body 0;.is illustrated in position between theseaming head and chuck and the head 6 is also illustrated in itscharacteristic position on the seaming head. The detail View Fig. 4shows these parts on a larger scale in which View the flange a of thecan body clearly appears as seated in the grooved or channeled peripheryb of the cover I). Fig. 4 also illustrates a fragment of the seaminghead 39 and the ejector ring 40, all of the parts there appearing in theposition which they assume at the beginning of the seaming operation. InFig. 2 the seaming head and chuck are about to engage the can parts,while in Fig. 3 the engagement is complete, and the can is held firmlyfor seaming and the seaming operation is about to begin.

Fig. 8 is a side view of the seaming wheel showing: somewhatdiagrammatically the will act upon the can parts; first to bend thedownward projecting lip on the edge of the can head inward from theposition shown in Fig. 4 to that shown in Fig. 5; second, to

beifd down the three thicknesses ofm etal projecting outward in Fig. 5to theintermediate bent position shown in Fig. '6, and third, to bend insaid three thicknesses of metal from the position shown. in Fig. 6 tothe final or seamed position shown in Fig. 7. These tool surfaces on theseaming wheel 27 are separately formed and are attached to the seamingwheel and arranged successively thereon in such mannerthat theabove-described operations are successively performed. This leaves asegment of the' seam; ing wheel, indicated by 27 in Fig. 8 and Fig. 20,which iswit'hout tool surfaces and which does not touch thecan. Thepurpose of this is to allow the movementpf the can parts into seamingposition, the operation being so timed, as will hereinafter fullyappear, that the can bodies and heads successively drop into positionbetween the seaming heads and chucks at the time that the blank segmentindicated by 27 of the seaming wheel is opposite a particular pair ofseaming heads and chucks. For the purpose of finally compressing theseam and causing it to assume the most compact form possible withoutfracturing the metal ajsegment 27 of the seaming wheel constituting apart of the tool surface indicated in Fig. 7 is rendered radiallymovable on the seaming wheel. This may be etfected in any desiredmanner, for example, by the pin and slot connection S-l. This movablesegment 27 is pressed outward by stout springs The result of thisoperation is that the rigid portion of the tool surface, shown in Fig.7, first engages the seam and moves it into approximate final form,which operation is foltoassi st the rapid automatic action of theseaming wheel. First, during the operation of bending in the downwardprojecting lip from the position shown in Fig. 4, to that shown in Fig.5, and second, to assist in properly bending down the three thicknessesof metal from the position shown in Fig. 5 to that shown in Fig. 6. I Inthe first case, the danger is that the downwardly projecting lip issometimes liable to be moved into actual contact with the side of thecan body producing a bungled seam, and in the second case the danger isthat the three thicknesses of metal will separate from close contactwith each other when being bent down to the position shown in Fig. 6. To overcome the first danger, I provide the devices illustrated in detailin'Figs. 9 and 10, and, for the second case, I provide the devicesillustrated in Fig. 1 and in detail in-Fig. 11.

Referring now particularly to Figs. 9 and 10, the seaming wheel isillustrated in part in these views. These views also show a fragment ofthe head 39 and parts of the can "a and cover I). In Fig. 9 the head isshown merely engaged with the can body, while in I Fig'lO the marginallip of the head has been bent up under the flange on the can body. Inthese figures the projecting portion 27 represents a part of one of theseammg tools, parts of which are also shown and t'lescribed inconnection with Figs. 5, 6 and 7. 56' ind cates a slide carried in aslideway in the -seaming wheel and pressed out;

ward by a spring 58. This slide '56 carries a shoe 59 which slides alongone face of the seaming wheel and is adapted to engage the head 39 orany other relatively stationary part at the time the slide 56 movesopposite the can being sea-med, so that the slide 56 is movable radiallyon the seaming wheel. On the side of the slide opposite the shoe 59 apincher finger60 is pivoted, which finger is adapted to act on thedepending lip or flange of the head- I) in the manner which will behereinafter described. At-

tached to said pincher finger 60-.is an arm I '61 which moveswith tliefinger and the seaming wheel and is pivoted to engage a cam 62 which isformed on the machine frame and located in the path of the arm 61 insuch position that it is engaged by'the arm 61 at the time when thepincher finger underlies the flange on the can cover. This cam 62 may beplaced in any desired situation on the frame and the frame may be formedaccordingly. The only essentiality is'that as the parts 60 and 61 movewith the seaming wheel and approach the can for .the purpose ofperforming the operation illustrated in Fig. 5, the-cam 62 will beengaged by the arm 61 andthe pincher finger 60 thrown toward thetool 27engaging the depending flange on the periphery of the head and pressingsaid depending flange in- .ward and upward to the position shown in Fig.10. Simultaneously with this operation the-shoe 59 strikes the head 39or any other stationary or relatively stationary member provided forthis purpose and moves the slide 56 with its connections inward radiallyof the seaming wheel. The

uet result of these combined movements therefore is that the pincher.finger 60 moves upward and inward simultaneously, striking the dependingflange or the can head and bending it inwardand upward. This movement iscombined with a simultaneous movement of the'pincher finger radiallyinward toward the center of the seaming wheel so that by means of thepincher finger the depending flange on the can head is pressed upwardagainst the flange on the can body andsimultaneouslysubjected to anoutward drawing pressure which insures that the inwardly bent-flange onthe can head does not engage and bend-overagainst the side of the canbody, but, on the contrary, assumes the true position as shown in Figs.5 and 10.

The pincher finger occupies on the seamingwheel 27 a positioncorresponding to the line 9' 9 in Fig. 8 and it therefore immediatelyprecedes the portion of the seaming wheel bearing the tool shown in Fig.'5, the relative position of which tool is indicated by the line 5-5in'Fig 8. Therefore, at the inception of the operation the pincherfinger performs the function above-described and is immediately followedby the tool shown aid.

by the pincher finger and rolls around the under circumference of thecan completing the operation of bending in the flange on the head in themanner illustrated in Fig. 5. After this, operations disclosed by Figs.6 and 7 follow in succession.

Referring now particularly to Figs. 1', 6 and 11, it will be seen thatin the operation of bending down the three thicknesses of metal to theposition shown in Figs. 6 and 11, there would ordinarily be danger ofseparating these three thicknesses and form ing an irregularseam. Toobviate this possible'ditlicultya backing wheel 63 has been providedwhich is conical in form and arranged, during the operation of the toolshown in Fig. 6, to move up under the seam so that the said tool bendsthe seam down and. simultaneously rolls it fiat against the rigidbacking roller. The backing roller may be mounted in any manner desiredand it is arranged automatically to move into operation during operationof the tool illustrated in Fig. 6 and to move back automatically at theend of-that period and before the operation of the tool illustrated inFig. ,7 is performed. For accomplishing this purpose we have here showna slide 64: which is mounted in suitable frame parts 25 indicated inFigs. 1 and 11 and which is actuated by a spring 65 holding the backingIts roller out of action until overcome by the positive operation of thecam 29 on which the roller (56 of the slide 64 runs. This cam is soarranged that it throws the slide 64 toward the seaming wheel during theperiod of the neration shown in Fig. 6, after which roller 66 runs offof the cam 29'and the spring returns the slide to the inactive positionof the backing roller.

eacl station. Since two seaming stations areiillustrated in Fig. 1 thereis a corresponding illustration of two backing rollers. Fig. 11indicates a spring interposed between two connected sections of theslide I 64 to allow them to yield slightly.

To each seaming station of the machine two clutes lead, one for the canbodies and one fo the heads. According to the form of.-.the inventionhere illustrated, the cans ,are seamed at one end only and if it bedesired to' seam them at the opposite end they -may be passed throughthe machine a second time. In Figs. 12 and 16 the arrangement of thesechutes is illustrated, Fig. 12 being W framing is a spindle shaft 71 onwhich are 39 and the holding chucks -17 are illustrated.

In this View the body chute 67 and the head chute 68 are located behindthe seaming heads, the can body and head in place between the headsbeing in front of the other cans in the chute. This arrangement of thedescription. Figs. 13 and 14. If the can body were Aswill be undefstoodthere is one backing roller 63 for chute and placed in position for theseaming operation. The motion of the holding chuck 47 toward the seamerhead causes the can in position to move horizontally and its flanged'end is introduced into the channeled edge of the head after which thetwo parts move 'asa unit toward the seamer head and finally assume therelation shown in Fig. 3.

Devices are provided for controlling the movement of the can bodies andheads in the machine as well as for so actuating the parts'of either ofthem so as to insure greater certainty of engagement of the body withthe head in accordance with the foregoing This is fully illustrated inmoved ona true axial line squarely against the can head the partsmightnot always engage truly and without danger of bending. If, however, thecan body is tilted slightly as indicated in Fig. 13 one point on itsperiphery is first engaged with the head and proper reception of theflange ofthe body in the curved edge of the head is thereby insured.Then as the movement of the can body is continued and said body issimultaneously returned to true axial position the complete engagementof the 'two parts of the can will be an easy matter, Fig. l-Ll:illustrates in an enlarged section the tilted position of the can andconsequently the easy engagement of the parts. For accomplishing thispurpose of controlling the movement of the can parts and preventing themfrom falling when the seamer heads and chucks are separated, themechanism illustrated in Figs. 15, 16, 17 1S and 19 has been adopted. InFig. .15, 25 indicates a fragment of the frame carrying one of theholding chuck of the before described spindle 48. Fig. 15

also illustrates the seamer head 39 with the ejector ring 40 and afragment of the seamer wheel 27 with one of its tools in operativeposition.

Mounted to turn freely between the bearings 69 and 70, suitablysustainedon the can cover and is engaged by the flange on tioned anddisposed thatthe star wheel 72 is and headare moved intoposition'betweeninseam- 5 the end of the can body. The star wheelr'i2 isattached to they spindle or to starv wheel 72 and is of such dimensionsthat it bearsagainst the can body proper. This star wheel .7 2 isprovided with long arms curved in the curvature of the can bodyso thatit may support the can body when it is moved into position at theseaming. station. The

spindlefl is located directly beneath the can chute 67 and to one sideof'and preferablyin horizontal line with, the seaming-heads.

The spindle shaft 71 also carries a sleeve 7 This is loose on the shaftand has at one end the -armed star wheel 74. -The star wheel 74: isadjacent the holding chuck and serves to sustain the adjacent end of thecan as shown in Fig. 13.

75 indicates a disk which is keyed tothe shaft 71 and connected with thesleeve through the medium of a flange 76 and a light spring 77 gtheparts being. so proporheld in advance of the-star wheel 74, thusraising, see Fig. 13, the-end of the can adjacent to the holdingchuck-and bringing about the tilting thereof as before explained.

The head chute 68 is arranged at an angle 1 to the can chute, as shownin Fig. 16 and so placed that the leading head bears against one pointof the star. wheel 72, the weight of the heads in the chute pressingagainst the star wheel acting to turn the star wheel to throw the canand head into positionat the seaming station. Then the can and head areengaging the star wheel as shown in' Fig. 16-and the wheel is releasedso that it may turn through ninety degrees, thiscan the seaming head andchuck and the remaining cans and heads drop down one position and engagethe star wheels.

'When the can body and head are first moved into position between theseaming head and chuck, the .can body is tilted owing to the peculiarposition of the star wheels, but as the holding chuck moves up an forcesthe can bodyhome straightening it tlie disk 75, opposite the sleeve 73,is provided with tappets 7 8 and 79 of which, according to theconstruction here shown, there are four two designated 7 8 andtwodesignated '79. The tappets 7 8 are in a circle concentric to the shaft71. This circle is smaller in diameter than that of asecond circle inwhich are located, the tappets 79.

A. suitable frame member 80 carries two stop pins 81 respectivelyarranged in the line of the said circles on the disk 75 and connectedwith each other through a double crank 82 and links 83 so that uponrocking the shaft 84; upon which said crank is mou'nted'the stop pinsalternately move in and out of the paths of said tappets '7 8 and 79.

Thedouble crank- 82 is connected to a moving part of the machine so that-it operates the pins81, once for'each revolution of the seaming. wheel,to allow the above named step by step, rotation of the shaft 71. Oneform of mechanism for accomplishing the movement of the crank 82 isshown 1n 'Fig. '19. In this construction, a gear 9 0 secured to shaft 26engages a gear 91 loosely mounted on the shaft carrying ear 34;. Thegear 90. is one-half thesizeof gear 91 ,so

Pgthat .gear 91 makes'one complete revolution for two completerevolutions of theseaming is engaged by a lever 93, which is connectedto the crank 82. Thecam- 92 isso arranged that it producesa movement of-the .pins 81 ,wheel. Secured to gear 91 is a cam 92 which immediatelyafter the holding chucks 47 have moved to release the can.

The organized operation of the apparatus may be'traced as followsz Disregard ing, for purpose of simplicity'or'description, the fact that inpractice the'machine will be equipped with a number of seaming stationsand confining the description to the operations at one seaming station,upon starting the motion of the shaft 26 theseamingwheel 27 and thedisk'28 rotate continuously. By reason of'the gearing as described'theseaming head also rotates coni tinuously and the cam 35 turns to impartperiodic reciprocations of the holding chuck. The can bodies and headsmoveby gravity through their respective chutes controlledby the step bystep rotation of the star whe'els 7 2 and 7-4. At the time that the canbody and its head reaches the position shown; in Figs. 2 and 13 thearrangement of the cam 35 causes the holding chuck to be moved towardthe can body so that the can body is pushed into the head asdescribedand the parts then take the position shown in Fig. 3. At this instant.the seaming wheel presents to the can theneutral segment indicated bythe bracket 27 (see Fig. 8) instantly thereafter the seamingdevices gointo operation and the clenched and seamed to the body in the mannerpreviously described As this operation is repeated and the seaming wheelagain presents its, segment indicated by the bracket 27 to the. seamingstation, the

seamed can is released by the withdrawal of the holding chuck and theoperation of theaeijector ring. The star wheels then rotate. to placethe next can body and head in can head-1s a movable section and meansfor yieldingly position and the seamed can drops. out of the seamingposition. The previously retracted holding chuck then returns to itsactive position and the operation is re peated. p

Power to drive the machine is applied to a drive shaft (not shown),which is arranged either above 01' below the shaft 26 and which isconnected to gear 30 by means of a pinion, not shown. The drive shaftis'protitled with the customary belt drive.

Having thus described our invention what We claim as new and desire tosecure by Letters Patent of the United States is:

1. In a machine for making tin cans, the combination of means forengaging and holding engaged a can body and its head and seaming wheelwith a plurality of tools rigidly fixed thereon adapted to act on saidcan parts to seam the head to the body, and

pressing it into action. v

2. In a can seaming machine, the combination of means for supplying thebodies. and heads, a holding chuck, means for reciprocating the chuck tomove a body and head into engagement, a seaming head against which vsaidcan parts are moved by the holding chuck, means for rotating the seaminghead, an ejector ring on the seaming head, means for operating said ringto eject the seamed-can, a seaming wheel with a plurality ofsuccessively acting tools thereon adapted to form the seam, means formounting and rotating said seaming wheel and means for controllingthe-movement of the bodies and heads to and from the seaming station. 1

3. In a can'seaming machine, the combination of means for supplying thebodies and heads, a holding-chuck, means for reciprocating the chuck tomove a body and head into engagement, a seaming head against which saidcan parts are moved by the holding chuck, means for rotating the seaminghead, an ejector ring on the seaming head, means for operating said ringto eject the seamed can, a seaming Wheel with a plurality of successivey acting tools thereon adapted to form the seam, means for mounting androtating said seaming wheel and means for controlling the movement ofthe bodies and heads to and from the seaming station, a backing wheeladapted to be moved against the seam during its formation, a means forperiodically moving said wheel in and out of operation, a pinch'erfinger serving to start the seaming operation and means forautomatically and periodically'moving said pincher finger in and out ofaction. I

4. In a can seaming machine, the combination of means for supplying thebodies and heads,aholding chuck, means for reciprocating the chuck tomove a body and head into engagement, a seaming head against bodies andheads to and from the seaming station, said devices for controlling themovements of the bodies and heads comprising yielding means for tiltingthe can body during its movement into engagement with thehead.

5. In a machine for attaching can heads to can bodies, the combinationof a seaming head, a seaming tool coac'ting therewith,

means for engaging the can body andits head with the seaming head, anejector ring encircling the seaming head to dislodge the can and meansfor automatically operating the ejector ring. r

6. In a machine for attaching heads to can bodies, the combination of aseaming 'head, a seaming tool coacting therewith, a

holding chuck, means for reciprocating ittoward and from the seaminghead, a member vyieldingly sustained. on the holding chuck and adaptedto be engaged by the can body and to yield beforej it as the body isadvanced by the motion of the holding chuck, said yielding member on theseaming block consisting in an annulus encircling the block and springsconnecting it therewith. I

7. In a machine for attaching heads'to can bodies, the combination of aseaming tool, a seaming head having an anvil surface against which thetool operates and adapted to be engaged by the can parts, an ejectorring coacting with the seaming head to dislodge'the can and a means forautomatically operating the ejector.

8. In a machine for fixing heads to can; bodies, the combination of acircular seaming head and adapted to be engaged by the can head andbody, a rotatable seaming tool coacting therewith, means for rotatablymounting the head, an ejector ring encircling the seaming head and meansfor automatically operating the ejector to dislodge the can.

9. In a machine for double seaming caih means on said wheel in advanceof said tool elements and movable with relation to said elements in heaxial direction of the body for initiall Lending a portion of the flangeof the hea to'prepare it for the operation of the tool elements.

10. ,In a machine for double seaming can heads and bodies, thecombination-of a re tatable seaming wheel, tool elements onsaid wheelfor bending the flange onthe head against the flangeloni the body, and afinger on said wheel in advance of said tool'ele ments arrangedtovinitially bend a portion of the flange on the head against the flangeon the body, toprepare the head flange for the operation of the toolelements.

11. In a machine for double seaming the heads to can bodies, thecombination of a seaming wheel having a tool on itsvperiphcry to bend inthe flange of the head against the flange ofv the body and a devicecarried r by said seaming wheel and immediately preceding said toolthereof to initially bend the flange and start the operation of said Ibendingtool, said means comprising a pincher finger" movably mounted onthe seaming wheel and devices for automatically throwing it intooperation,

12. In a machine for double seaming can heads to their bodies, thecombination of a seam'ing wheel having a bending tool there-,

seaming wheel having a bending tool thereon to bend the flange of thehead against the flange of the body, a slide mounted to move radially onthe seaming -WheeL'means for so moving the slideas it approaches theseaming station, a pincher' finger mounted on the slide 'to engage andbend said head-flange, preparatory to the operation of said bending tooland means for automatically actuating said pmcher finger, the said meansfor "radially movingthe slide'being operative during the operation ofthe pincher finger,

whereby said finger simultaneously bends and-draws outward thehead-flange.

14. In a machine for doubleseaming can I heads to their bodies, thecombinationvof a seaming wheel having a plurality of seaming toolsthereon in fixed relation to each other, whereby the flange of thecanhead is v first bent against the flange of the can body and subsequentlythe three thicknesses bent down against the can body in a double seam,

a backing tool adapted to bear under said three thicknesses of metalduring'a period of the bending operation and means for automaticallymoving said bending tool in and out of operation.

15.'In a machine for affixing flanged can heads to the flanged bodies,the combina' tion with the seamingmechanism of means for moving theheads andxb'odies into engagement and means for tilting the 'body duringthe period of its engagingcmovement.

16. In 'a machine for affixing flanged can heads-to, flanged bodies, thecombination with the seaming mechanism of means for movingthe heads andbodies into engage' ment and yieldingly held means for tilting the bodyduring the period ofits engaging movement.

17. In a machine for affixing can bodies to their heads, the combinationwith the seaming mechanism and a means for moving the head, of twocontrolling members adapted .to regulate the movement of the can body.

body into engagement with the w means for yieldingly connecting saidinembers out of line with each other, for the purpose specified, andmeans for allowing said members a step by step motion under the force ofgravity of the cans.

18. In a machine for affixing can heads to theirbodies, the combinationwith the seaming means and devices for moving the can bodies intoengagement with the heads, of a rotary shaft, two star wheels thereon,

of which one is fixed and the other'rotatable on the shaft, a diskfastened to the shaft, a spring connecting the disk and the second namedstar wheel yiel dingly to hold this star wheel in advance of thefirstnamed starwheel, for the purposespecified,

and'means for allowing said shaft a step by step motion.

19. In a machine for attaching heads to can bodies, the-combination of.a seaming head, a seaming tool co-acting therewith, a holding chuckadapted to enter the endv of theean body to center the can, means forreciprocating said chuck toward and from said head to introduce saidchuck into and remove the chuck from said can body, and a grippingmember yieldingly mounted on said chuck adapted to yieldingly engage thecan body to grip the body betweensaid seaming head and said member,

\ 20. In a machine forthe manufacture of tin cans, the combination ofmeans-for engaging and holding the can body and head,

a rotatable seaming element for seaming the body and head together, saidseaming element comprising a plurality of tools for performing thesuccessive seaming operations, acompression tool onsaid seaming elementand means for forcing said compression tool outwardly with relation tothe seaming tool and against the body and head seam for compressing theseam after the successive seaming operations have been performed.

21. In a machine of the character disclosed, the combination of aseaming head,

a seaming tool coacting therewith, a holding ed with, relation to eachother so as to yield independently of each other inthe axial directionof the chuck upon coming into contact with the can body.

22. In.a machine of the character disclosed, the combination of aseaming head,

a seaming tool coactingtherewith,a holding chuck, means forreciprocating said chuck toward and away from said head, said chuckcomprising two members, a centering mem-, her and a gripping member,said centering member being adapted to enter the open end of the canbody to center the can, said gripping member being adapted to engage theend of the can body between it and said head, said centering memberbeing yieldingly moiinted upon said reciprocating means an said grippingmember being yieldingly mounted on said centering member so that saidmembers may yield in the axial direction of the chuck.

23. In a machine of the character disclosed, the combination of meansfor e'ngaging and holding a can body and its head, a seaming tool forseaming the body and head and a spring pressed'member mounted on saidtool for compressing the seam after the seaming operation has beencompleted.

24. In a machine for afiixing can heads to their bodies, the combinationwith the seam ing mechanism, of means for controlling the feedingmovement of one end of the can bodies and the heads, means forcontrolling the feeding movement of the other end of the bodies so'thatthe body will rest at an inclination to the head, means for yieldinglyconnecting said controlling means together so that one may have alimited movement with respect to the other to facilitate theintroduction of the end of the body into thegroove on the head, meansfor allowing a step by step movement of both of said controlling means,and means for moving the can body and head into engagement.

25. In a machine of the character disclosed, the combination with aseaming mechanism of a rotatable engaging element for engaging one endof the can bodies and the can heads, a rotatable engaging element forengaging. the other end ofthe can bodies so that the body will restat aninclination to "the head, said engaging elements being "mounted torotate slightly with relation to each other to bring the can body intoalinement with the can head, means for introducing the end of the canbody into said head during relative movement of said engaging elements,and means for intermittently rot-atlng said engaging elements so as tobring said elements successively into receivi'ng, seaming anddischarging positions.

FRANZ BRUCKMANN, JR, OTTO DEMPEVVOLF.

WVILH. HINKEL.

lVit-nesses to the signature of Otto Dempewolf: A. ROTHENBERG, JOHANNOLIVET.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner 9f Patents,

Washington, D. G.

